elihu

14 ms·

211.
by elihu 3y ago
LFPs are flammable too, they just don't tend to ignite as easily. I suspect they're probably easier to put out, but I don't know for sure. (I'd be curious what the real-life vehicle fire statistics actually are so far f
212.
by elihu 3y ago
I think the point the post you're replying to was making is that the gas tank itself doesn't usually go bad. It's true you can't just let gas sit in a tank forever, but with EVs it's also true that you can't u
213.
by elihu 3y ago
> "Batteries go bad over a rather short period of time" Not really. They do gradually lose capacity over a long time, but it's a slow process. The US Government requires EV batteries to have an 8 year / 100,000 mile
214.
by elihu 3y ago
I think that may be due to pressure from their automotive industry, who for whatever reason are very resistant to making battery electric cars.
215.
by elihu 3y ago
The NES has, if I remember right, a triangle oscillator, a square wave oscillator, a noise source, and a digitally-controlled mixer. It might also have a saw wave oscillator too. In place of those, I'm imagining something that takes t
216.
by elihu 3y ago
Very nice. I'd love to have a physical version of this: an NES with CV and gate outputs to drive a modular synthesizer, instead of using the onboard sound generator.
217.
by elihu 3y ago
> Not per note pitch bend. Note On/Off messages support an extra 16 bits of "attribute" data that can optionally be used as an unsigned 7.9 fixed point pitch offset in semitones. > Note numbers are also expanded to 256
218.
by elihu 3y ago
Yes, that's a problem with MIDI 1.0. There are a few ways to work around it. Some synths support custom tuning tables, and there's even a MIDI spec for custom tuning tables called MTS that hardly anyone actually implements as fa
219.
by elihu 3y ago
I don't know what all the options are, but MTS-ESP is one. If I understand it right, it's a sort of out-of-band channel where you can apply tuning tables to all the MIDI synths that use the MTS-ESP API from one place. I think it&
220.
by elihu 3y ago
We might soon have good auto-generated music, but that won't mean that everyone else who was making music the regular way is going to stop.
221.
by elihu 3y ago
Yeah, MIDI 2.0 has per-note pitch bend. They kept with 7 bits for note numbers, though, which is kind of inconvenient. If you have an instrument with more than 128 keys, you have to do a kind of dynamic allocation thing where you find the
222.
by elihu 3y ago
Eh, it's fine. With two decimal points of precision you're basically working in cents, which is a pretty standard way of representing tuning. This doesn't need to be a trivially human-readable format, but I think maybe it wo
223.
by elihu 3y ago
MPE exists, and can handle microtuning of pitch. MIDI 2.0 supports per-note pitch bend. Old multitimbral MIDI synths can be used in an MPE-like fashion by using the one-note-per-channel and pitch bend trick. Modular synthesizers (and vir
224.
by elihu 3y ago
One thing I'd like to see is native support for some notion of pitch other than 12-tone equal temperament. Looking at their example, I see this: <Note time="0.000000" duration="0.250000" channel="0" key
225.
by elihu 3y ago
This feels like the setup for a limerick: There was a monitoring app called bandwhich that fits a network administrator's niche something something something something something something sudo make me a sandwich.
226.
by elihu 3y ago
> "Consider the A10 in the current Ukrainian war: CAS is impossible because both sides have too much antiair." Not really. It's true that anti-air has prevented aircraft from dominating the battlefield, but both sides sti
227.
by elihu 3y ago
> "The A-10 also has high maintenance costs..." Isn't the A-10 the cheapest-to-operate combat jet the U.S. uses? I mean, maybe you could argue that you get more capability per dollar for some other platform, but A-10s aren
228.
by elihu 3y ago
The article mentions that they have transponders that can be used but apparently in this case it was off or not working. They can also attach a radar reflectors when they want to be more visible to radar, and apparently the weapons configu
229.
by elihu 3y ago
One of the article updates quotes from a Washington Post story: > "The jet’s transponder, which usually helps locate the aircraft, was not working “for some reason that we haven’t yet determined,” said Jeremy Huggins, a spokesman at
230.
by elihu 3y ago
This is an interesting video I came across awhile back: https://www.youtube.com/watch?v=jjOW6kLEckg Apparently Libya has a huge ancient aquifer (or several aquifers really) that they built pipelines to access, and now that&
231.
by elihu 3y ago
It's apparently mostly used to make PVC though: > "This colorless compound is an important industrial chemical chiefly used to produce the polymer, poly(vinyl chloride) (PVC)"
232.
by elihu 3y ago
> More than a mere diary, Ying Yai Sheng-lan is a treatise on society and nature across half the planet in the 15th century, and the comprehensive account of a novel undertaking: Zheng’s fleet, the most lethal in existence, will ply the
233.
by elihu 3y ago
Don't they waste the upper stage on Falcon 9 launches? (That being one of the reasons they want to transition to using Starship.)
234.
by elihu 3y ago
Well yeah, that's kind of why I brought it up. PVC is cheap, available, and easy to use. Is there some other material that could replace PVC but made from less environmentally undesirable materials? Is it available at hardware store
235.
by elihu 3y ago
I don't know. I think that may have other issues with the additives to make it flexible, but that's outside my knowledge. The East Palestine train wreck recently was carrying a big load of vinyl chloride among other things. http
236.
by elihu 3y ago
Making cool stuff out of cheap materials is great, but as I understand it, PVC itself is nasty stuff (even compared with other plastics) that we should probably be avoiding if we can. I'm not sure what would work as a good general-purp
237.
by elihu 3y ago
The thing I didn't know until I came across a similar article posted here on HN a few years ago (maybe it was the same one?) is that the White House panels weren't photovoltaic, they were solar-thermal for heating hot water. Basic
238.
by elihu 3y ago
The Titanic didn't sink the moment it hit the iceberg, it took a little over two and a half hours. During a significant portion of that time it wasn't all that obvious that anything was seriously wrong. The ship was listing slig
239.
by elihu 3y ago
Nickel is scarce, and fairly expensive. I believe it tends to be in the same general ballpark as cobalt in terms of price. Nickel is mostly used to make stainless steel. If I understand correctly, nickel is often a side-product of copper
240.
by elihu 3y ago
I assume you mean that energy density is about 14% less (86%) rather than having 14% of the capacity of lithium ion. I just wanted to make that clarification in case anyone who isn't familiar with LFP is misled into thinking that LFP-b

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